Best saloon car ever made?

[biggbn]

I have been giving some thought to this recently. What do you think is the best saloon car of all time? And why?

I have a shortlist and am surprised it does not contain any 'workaday' cars, only cars of huge quality or innovation.

My top five in no order are

Citroen ds..this would have been like a spaceship in '55 compared to the staid offerings of most manufacturers. Has a car so advanced for its time ever been offered to the mass market?

Lexus ls400. This car blew it's contemporaries out of the water for build quality and refinement and is a thing of beauty in its own understated right.

Jaguar xj6/12 series three. Otherworldly refinement and to my eyes the best looking saloon ever made.

Tatra t87, same reasons as the ds but 15 years or so earlier. Sci-fi made real.

E39 BMW 5 series. I doubt a more complete car had been offered to the public at affordable money. The high point of 5 series design.